Changes made in both the Quick Start and in the Poky Reference Guide. In the Quick Start I added the '-k' option to the example command and then referenced where to find help on the option. I did not want to go into detail on bitbake options in this QS. In the Poky Reference Manual in the 'BitBake' section I added a paragraph that discusses the merits of the '-k' and '--continue' options. Changes are in yocto-docs.
http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=b8b9667f48a8dc1f57b8b0d9d449c7ac53119b41 Amd http://git.yoctoproject.org/cgit/cgit.cgi/poky/commit/?id=0eb49324c86e56727eb764bd9018bca0bf75c869
Fixes in manual.